Blood flowing through a long, smooth vessel at a steady rate, flows in a streamline fashion. This is also called Laminar Flow.

Laminar Flow changes to turbulent flow if:

1. Flow increases
2. Blood passes over obstruction
3. Makes a sharp turn
4. Passes over a rough surface


Turbulency results in:
  Reduced flow due to an increase in resistance
  Increase incidence of cholesterol plaques and clot formation